Vending machine



FIG. 1 is a perspective view of a vending machine showing my new design; and,

FIG. 2 is a front elevational view thereof.

The undisclosed left side view is a mirror image of the right side view; and the rear view is the same as the right side view except for the coin receptor.

The undisclosed bottom view forms no part of the claimed design. 

The ornamental design for a vending machine, as shown and described. 